Messaured a little small

Bri • Married and mother to babygirl💓

I Just went to my doctors appointment for 28 weeks and this is the first time I’ve measured a little small. The doctor didn’t seem too concerned and just said we’ll do a growth scan at 32 weeks. I’m really nervous though that she’s not growing , even though her kicks are so strong!!! Should i be concerned ? I’ve always been small ( before pregnancy i weighed 124 and now i weigh around 131) ... just want to know if this has happened to anybody else